You sir, need to do your research before posting. People will still choose iPads over Surface Pro, but not for the reasons you state!
The processing power of the Surface Pro leaves every iPad for dust, and then some. In case you didn't know, an Intel Core i5 Haswell processor with 4GB RAM is pretty powerful for a laptop, let alone a tablet. Your meager mobile phone processor is not the mighty powerhouse you imagine it to be. The build quality and design of the Surface range is actually very good indeed, but then you'd actually have to look/feel one to know that I guess.
The fact remains that iPad will continue to leave Surface for dead in the sales/popularity stakes. No contest.